Issue Summary
December 2025 (Vol. 65, Issue 4)

When “Truth” Shapes the Vote: How Perceived Message Honesty Drives Policy Support
Discover how voters’ perceptions of truth in political advertising shape vote choice in industry-versus-opponent policy battles, in this new study. Findings show that the truth matters, but differently for different voters. Using survey data from more than 1,800 California voters across three high-stakes ballot measures, the authors find that perceived truth in industry messages most strongly boosts support among conservative-leaning voters, while perceived truth in opponent messages most strongly boosts support among liberal-leaning voters. Crucially, political party endorsements can flip these patterns. When one party endorses the industry side, truth perceptions become most influential for voters of the other party. A qualitative, follow-up study on the 2022 sports-betting initiatives further shows that voters naturally connect truthfulness with trust, reinforcing truth as a key driver of persuasion. For practitioners, the findings highlight that effective issue advertising must consider not only message accuracy but also political identity and party cues—because perceived truth can either mobilize your base or win over the other side.